Improvement of the NOx selectivity for a planar YSZ sensor
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- 作者：Jing Gao ; Jean-Paul Viricelle ; Christophe Pijolat ; Philippe Breuil ; Philippe Vernoux ; Antoinette Boreave ; Anne Giroir-Fendler
- 关键词：NOx sensor ; catalytic filter ; selectivity
- 刊名：Procedia Chemistry
- 出版年：2009
- 出版时间：August 2009
- 年：2009
- 卷：1
- 期：1
- 页码：589-592
- 全文大小：274 K
文摘
The present work aims to develop a sensor that can leave the laboratory and be industrialised. For this reason potentiometric sensors based on a solid electrolyte YSZ and 2 metallic electrodes (platinum and gold) were fabricated by screenprinting technology and were tested in a laboratory test bench for different concentrations of CO, NO and NO2 in oxygen rich atmosphere. By deposing a catalytic filter consisting of 1.7 % Pt dispersed in alumina directly on the electrodes, it was shown that the selectivity towards NOx could be highly reinforced. This filter was characterized by the use of SEM, TPD, and XRD technology.